Problems

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Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
0-1 Sequences 5416 817 15% 0.01 1063 552 52% 6.7
10 Kinds of People 9587 2015 21% 0.01 1657 1136 69% 5.1
2048 5664 2705 48% 0.00 2581 2212 86% 2.2
3D Printed Statues 5144 2474 48% 0.00 2346 2107 90% 1.9
3D Printer 444 102 23% 0.00 162 82 51% 7.6
3-Sided Dice 1756 142 8% 0.00 282 106 38% 8.6
4 thought 5486 1860 34% 0.00 1862 1552 83% 3.0
A1 Paper 3704 1095 30% 0.00 1076 845 79% 3.8
Aaah! 19116 9058 47% 0.00 8099 7533 93% 1.5
Abandoned Animal 1168 229 20% 0.03 274 196 72% 5.1
ABC 7266 3368 46% 0.00 3209 2914 91% 1.7
Above Average 3992 1674 42% 0.00 1705 1526 90% 2.0
A+B Problem 5330 565 11% 0.03 775 272 35% 8.0
A Brief Gerrymander 146 26 18% 0.15 32 18 56% 8.4
Abstract Art 205 54 26% 0.00 54 40 74% 5.9
Absurdistan Roads II 496 178 36% 0.00 173 117 68% 6.8
Absurdistan Roads III 1225 326 27% 0.02 312 234 75% 5.6
Access Points 145 66 46% 0.01 57 42 74% 5.6
A Classy Problem 6042 1620 27% 0.01 1386 1074 77% 4.4
ACM Contest Scoring 4886 3078 63% 0.00 2709 2559 94% 1.5
Adding Words 6776 1560 23% 0.00 1585 1207 76% 4.3
A Different List Game 5306 368 7% 0.00 647 131 20% 9.1
A Different Problem 20566 7990 39% 0.00 7392 6421 87% 2.1
Adjoin the Networks 1422 380 27% 0.00 332 257 77% 5.8
Administrative Difficulties 755 187 25% 0.03 205 137 67% 6.5
Advanced Causal Measurements 49 12 24% 0.10 15 12 80% 6.6
Adventure Begins 142 47 33% 0.06 54 41 76% 3.6
Adventures in Moving -- Part IV 688 214 31% 0.00 197 169 86% 4.5
A Favourable Ending 1204 309 26% 0.00 287 208 72% 4.9
A Feast For Cats 1282 462 36% 0.19 319 263 82% 4.7
Air Conditioned Minions 3007 847 28% 0.00 925 686 74% 4.3
Airline Hub 1514 271 18% 0.01 300 165 55% 6.9
Airport Coffee 702 150 21% 0.09 143 108 76% 6.6
Airport Construction 2682 355 13% 0.02 285 148 52% 7.4
Airport Logistics 45 10 22% 0.00 16 10 62% 7.7
Airports 283 88 31% 0.11 84 64 76% 6.0
Akcija 4686 2020 43% 0.00 1817 1597 88% 2.1
Aladin 711 67 9% 0.10 108 20 19% 8.9
Alchemy 95 15 16% 0.03 27 15 56% 8.0
Alea iacta est 29 11 38% 0.34 14 11 79% 6.9
Alice in the Digital World 1934 541 28% 0.01 537 422 79% 3.9
Alien Codebreaking 53 6 11% 3.23 15 4 27% 8.6
Alien Numbers 1685 857 51% 0.00 834 751 90% 2.1
A List Game 5915 1753 30% 0.00 1687 1411 84% 3.1
All about that base 2403 950 40% 0.00 911 766 84% 2.9
All Different Directions 834 374 45% 0.00 338 296 88% 2.6
Allergy Test 324 106 33% 0.00 100 56 56% 7.7
All Friends 769 146 19% 0.00 130 65 50% 9.0
All Just A Dream 1466 345 24% 0.05 232 164 71% 6.5
All Pairs Shortest Path 6536 1132 17% 0.02 778 537 69% 6.0
Almost Perfect 4769 1103 23% 0.00 1189 932 78% 3.5
Almost Union-Find 4940 865 18% 0.02 773 428 55% 7.0
Alphabet 832 415 50% 0.00 426 363 85% 2.9
Alphabet Spam 5225 3350 64% 0.00 2585 2489 96% 1.4
Alternative Bracket Notation 193 81 42% 0.00 85 71 84% 5.0
Altruistic Amphibians 295 69 23% 0.24 72 49 68% 5.4
Amalgamated Artichokes 3184 1431 45% 0.01 1281 1115 87% 2.7
Amanda Lounges 1197 335 28% 0.03 306 238 78% 5.5
A Mazing! 1491 352 24% 0.09 170 130 76% 4.8
Amazing Adventures 84 29 35% 0.03 31 22 71% 6.7
Amazing Race 258 68 26% 0.39 75 55 73% 6.3
Ambiguous Result 203 48 24% 0.03 71 46 65% 7.5
Amsterdam Distance 952 391 41% 0.00 438 353 81% 2.8
A Multiplication Game 403 108 27% 0.00 135 98 73% 4.8
Anagram Counting 2560 977 38% 0.00 929 767 83% 3.3
Andrew the Ant 220 59 27% 0.06 74 55 74% 5.4
A New Alphabet 8213 3721 45% 0.00 3486 3222 92% 1.8
An I for an Eye 204 57 28% 0.00 69 50 72% 5.3
Animal Classification 1320 278 21% 0.03 262 166 63% 6.9
An Industrial Spy 1278 661 52% 0.02 518 441 85% 3.3
Another Brick in the Wall 1829 974 53% 0.00 948 865 91% 1.9
Another Candies 5837 1571 27% 0.00 1648 1352 82% 2.9
Another Dice Game 80 59 74% 0.00 51 48 94% 3.4
Another Query on Array Problem 1123 149 13% 0.05 250 105 42% 7.8
Anthony and Cora 652 163 25% 0.00 199 134 67% 5.8
Anthony and Diablo 1631 584 36% 0.00 645 557 86% 2.4
Antiarithmetic? 999 182 18% 0.01 242 132 55% 7.3
Ants 2474 1136 46% 0.00 868 774 89% 2.2
Apaxiaaaaaaaaaaaans! 8706 5355 62% 0.00 4859 4659 96% 1.3
Appalling Architecture 72 29 40% 0.00 33 29 88% 5.1
Apparatus 620 154 25% 0.01 117 90 77% 5.1
Apple Market 436 88 20% 0.07 100 54 54% 7.2
Apples, Cherries, and Mangos 357 112 31% 0.02 105 81 77% 5.6
A Prize No One Can Win 353 155 44% 0.00 122 106 87% 2.7
Aquarium Tank 366 108 30% 0.00 98 77 79% 5.8
Aqueduct Construction 140 49 35% 0.01 40 34 85% 6.3
A Question of Ingestion 982 230 23% 0.00 224 163 73% 5.9
Arable Area 231 53 23% 0.04 55 33 60% 8.1
Arachnophobia 229 68 30% 0.14 64 51 80% 5.1
A Random Problem 102 22 22% 0.00 24 17 71% 7.1
A Rational Sequence 1159 384 33% 0.00 426 305 72% 5.1
A Rational Sequence 2 1324 960 73% 0.00 885 845 95% 1.6
A Rational Sequence (Take 3) 596 505 85% 0.00 388 379 98% 1.7
Arbitrage? 1715 345 20% 0.02 254 204 80% 3.6
Arcade! 1118 201 18% 0.01 194 138 71% 6.2
Arctic Network 1205 419 35% 0.00 363 287 79% 4.7
A Real Challenge 5701 2753 48% 0.00 2649 2483 94% 1.6
Area of Effect 87 10 11% 1.93 20 8 40% 8.0
Are You Listening? 425 143 34% 0.00 136 128 94% 2.6
Arithmetic 2205 636 29% 0.00 650 496 76% 4.0